From: Subrata M. <su...@li...> - 2009-06-30 16:10:07
|
On Tue, 2009-06-30 at 20:27 +0530, Poornima Nayak wrote: > [Patch 1/10]Patch to integrate kernbench to LTP to test sched_mc=2 > To verify CPU consolidation when sched_mc=2 we need kernbench. Hence integrating it > in LTP. > > Signed-off-by: poornima nayak <mp...@li...> Thanks. > > diff -uprN ltp_orig/utils/benchmark/kernbench-0.42/COPYING ltp_patched/utils/benchmark/kernbench-0.42/COPYING > --- ltp_orig/utils/benchmark/kernbench-0.42/COPYING 1970-01-01 05:30:00.000000000 +0530 > +++ ltp_patched/utils/benchmark/kernbench-0.42/COPYING 2009-06-30 15:05:39.000000000 +0530 > @@ -0,0 +1,340 @@ > + GNU GENERAL PUBLIC LICENSE > + Version 2, June 1991 > + > + Copyright (C) 1989, 1991 Free Software Foundation, Inc. > + 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA > + Everyone is permitted to copy and distribute verbatim copies > + of this license document, but changing it is not allowed. > + > + Preamble > + > + The licenses for most software are designed to take away your > +freedom to share and change it. By contrast, the GNU General Public > +License is intended to guarantee your freedom to share and change free > +software--to make sure the software is free for all its users. This > +General Public License applies to most of the Free Software > +Foundation's software and to any other program whose authors commit to > +using it. (Some other Free Software Foundation software is covered by > +the GNU Library General Public License instead.) You can apply it to > +your programs, too. > + > + When we speak of free software, we are referring to freedom, not > +price. Our General Public Licenses are designed to make sure that you > +have the freedom to distribute copies of free software (and charge for > +this service if you wish), that you receive source code or can get it > +if you want it, that you can change the software or use pieces of it > +in new free programs; and that you know you can do these things. > + > + To protect your rights, we need to make restrictions that forbid > +anyone to deny you these rights or to ask you to surrender the rights. > +These restrictions translate to certain responsibilities for you if you > +distribute copies of the software, or if you modify it. > + > + For example, if you distribute copies of such a program, whether > +gratis or for a fee, you must give the recipients all the rights that > +you have. You must make sure that they, too, receive or can get the > +source code. And you must show them these terms so they know their > +rights. > + > + We protect your rights with two steps: (1) copyright the software, and > +(2) offer you this license which gives you legal permission to copy, > +distribute and/or modify the software. > + > + Also, for each author's protection and ours, we want to make certain > +that everyone understands that there is no warranty for this free > +software. If the software is modified by someone else and passed on, we > +want its recipients to know that what they have is not the original, so > +that any problems introduced by others will not reflect on the original > +authors' reputations. > + > + Finally, any free program is threatened constantly by software > +patents. We wish to avoid the danger that redistributors of a free > +program will individually obtain patent licenses, in effect making the > +program proprietary. To prevent this, we have made it clear that any > +patent must be licensed for everyone's free use or not licensed at all. > + > + The precise terms and conditions for copying, distribution and > +modification follow. > + > + GNU GENERAL PUBLIC LICENSE > + TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION > + > + 0. This License applies to any program or other work which contains > +a notice placed by the copyright holder saying it may be distributed > +under the terms of this General Public License. The "Program", below, > +refers to any such program or work, and a "work based on the Program" > +means either the Program or any derivative work under copyright law: > +that is to say, a work containing the Program or a portion of it, > +either verbatim or with modifications and/or translated into another > +language. (Hereinafter, translation is included without limitation in > +the term "modification".) Each licensee is addressed as "you". > + > +Activities other than copying, distribution and modification are not > +covered by this License; they are outside its scope. The act of > +running the Program is not restricted, and the output from the Program > +is covered only if its contents constitute a work based on the > +Program (independent of having been made by running the Program). > +Whether that is true depends on what the Program does. > + > + 1. You may copy and distribute verbatim copies of the Program's > +source code as you receive it, in any medium, provided that you > +conspicuously and appropriately publish on each copy an appropriate > +copyright notice and disclaimer of warranty; keep intact all the > +notices that refer to this License and to the absence of any warranty; > +and give any other recipients of the Program a copy of this License > +along with the Program. > + > +You may charge a fee for the physical act of transferring a copy, and > +you may at your option offer warranty protection in exchange for a fee. > + > + 2. You may modify your copy or copies of the Program or any portion > +of it, thus forming a work based on the Program, and copy and > +distribute such modifications or work under the terms of Section 1 > +above, provided that you also meet all of these conditions: > + > + a) You must cause the modified files to carry prominent notices > + stating that you changed the files and the date of any change. > + > + b) You must cause any work that you distribute or publish, that in > + whole or in part contains or is derived from the Program or any > + part thereof, to be licensed as a whole at no charge to all third > + parties under the terms of this License. > + > + c) If the modified program normally reads commands interactively > + when run, you must cause it, when started running for such > + interactive use in the most ordinary way, to print or display an > + announcement including an appropriate copyright notice and a > + notice that there is no warranty (or else, saying that you provide > + a warranty) and that users may redistribute the program under > + these conditions, and telling the user how to view a copy of this > + License. (Exception: if the Program itself is interactive but > + does not normally print such an announcement, your work based on > + the Program is not required to print an announcement.) > + > +These requirements apply to the modified work as a whole. If > +identifiable sections of that work are not derived from the Program, > +and can be reasonably considered independent and separate works in > +themselves, then this License, and its terms, do not apply to those > +sections when you distribute them as separate works. But when you > +distribute the same sections as part of a whole which is a work based > +on the Program, the distribution of the whole must be on the terms of > +this License, whose permissions for other licensees extend to the > +entire whole, and thus to each and every part regardless of who wrote it. > + > +Thus, it is not the intent of this section to claim rights or contest > +your rights to work written entirely by you; rather, the intent is to > +exercise the right to control the distribution of derivative or > +collective works based on the Program. > + > +In addition, mere aggregation of another work not based on the Program > +with the Program (or with a work based on the Program) on a volume of > +a storage or distribution medium does not bring the other work under > +the scope of this License. > + > + 3. You may copy and distribute the Program (or a work based on it, > +under Section 2) in object code or executable form under the terms of > +Sections 1 and 2 above provided that you also do one of the following: > + > + a) Accompany it with the complete corresponding machine-readable > + source code, which must be distributed under the terms of Sections > + 1 and 2 above on a medium customarily used for software interchange; or, > + > + b) Accompany it with a written offer, valid for at least three > + years, to give any third party, for a charge no more than your > + cost of physically performing source distribution, a complete > + machine-readable copy of the corresponding source code, to be > + distributed under the terms of Sections 1 and 2 above on a medium > + customarily used for software interchange; or, > + > + c) Accompany it with the information you received as to the offer > + to distribute corresponding source code. (This alternative is > + allowed only for noncommercial distribution and only if you > + received the program in object code or executable form with such > + an offer, in accord with Subsection b above.) > + > +The source code for a work means the preferred form of the work for > +making modifications to it. For an executable work, complete source > +code means all the source code for all modules it contains, plus any > +associated interface definition files, plus the scripts used to > +control compilation and installation of the executable. However, as a > +special exception, the source code distributed need not include > +anything that is normally distributed (in either source or binary > +form) with the major components (compiler, kernel, and so on) of the > +operating system on which the executable runs, unless that component > +itself accompanies the executable. > + > +If distribution of executable or object code is made by offering > +access to copy from a designated place, then offering equivalent > +access to copy the source code from the same place counts as > +distribution of the source code, even though third parties are not > +compelled to copy the source along with the object code. > + > + 4. You may not copy, modify, sublicense, or distribute the Program > +except as expressly provided under this License. Any attempt > +otherwise to copy, modify, sublicense or distribute the Program is > +void, and will automatically terminate your rights under this License. > +However, parties who have received copies, or rights, from you under > +this License will not have their licenses terminated so long as such > +parties remain in full compliance. > + > + 5. You are not required to accept this License, since you have not > +signed it. However, nothing else grants you permission to modify or > +distribute the Program or its derivative works. These actions are > +prohibited by law if you do not accept this License. Therefore, by > +modifying or distributing the Program (or any work based on the > +Program), you indicate your acceptance of this License to do so, and > +all its terms and conditions for copying, distributing or modifying > +the Program or works based on it. > + > + 6. Each time you redistribute the Program (or any work based on the > +Program), the recipient automatically receives a license from the > +original licensor to copy, distribute or modify the Program subject to > +these terms and conditions. You may not impose any further > +restrictions on the recipients' exercise of the rights granted herein. > +You are not responsible for enforcing compliance by third parties to > +this License. > + > + 7. If, as a consequence of a court judgment or allegation of patent > +infringement or for any other reason (not limited to patent issues), > +conditions are imposed on you (whether by court order, agreement or > +otherwise) that contradict the conditions of this License, they do not > +excuse you from the conditions of this License. If you cannot > +distribute so as to satisfy simultaneously your obligations under this > +License and any other pertinent obligations, then as a consequence you > +may not distribute the Program at all. For example, if a patent > +license would not permit royalty-free redistribution of the Program by > +all those who receive copies directly or indirectly through you, then > +the only way you could satisfy both it and this License would be to > +refrain entirely from distribution of the Program. > + > +If any portion of this section is held invalid or unenforceable under > +any particular circumstance, the balance of the section is intended to > +apply and the section as a whole is intended to apply in other > +circumstances. > + > +It is not the purpose of this section to induce you to infringe any > +patents or other property right claims or to contest validity of any > +such claims; this section has the sole purpose of protecting the > +integrity of the free software distribution system, which is > +implemented by public license practices. Many people have made > +generous contributions to the wide range of software distributed > +through that system in reliance on consistent application of that > +system; it is up to the author/donor to decide if he or she is willing > +to distribute software through any other system and a licensee cannot > +impose that choice. > + > +This section is intended to make thoroughly clear what is believed to > +be a consequence of the rest of this License. > + > + 8. If the distribution and/or use of the Program is restricted in > +certain countries either by patents or by copyrighted interfaces, the > +original copyright holder who places the Program under this License > +may add an explicit geographical distribution limitation excluding > +those countries, so that distribution is permitted only in or among > +countries not thus excluded. In such case, this License incorporates > +the limitation as if written in the body of this License. > + > + 9. The Free Software Foundation may publish revised and/or new versions > +of the General Public License from time to time. Such new versions will > +be similar in spirit to the present version, but may differ in detail to > +address new problems or concerns. > + > +Each version is given a distinguishing version number. If the Program > +specifies a version number of this License which applies to it and "any > +later version", you have the option of following the terms and conditions > +either of that version or of any later version published by the Free > +Software Foundation. If the Program does not specify a version number of > +this License, you may choose any version ever published by the Free Software > +Foundation. > + > + 10. If you wish to incorporate parts of the Program into other free > +programs whose distribution conditions are different, write to the author > +to ask for permission. For software which is copyrighted by the Free > +Software Foundation, write to the Free Software Foundation; we sometimes > +make exceptions for this. Our decision will be guided by the two goals > +of preserving the free status of all derivatives of our free software and > +of promoting the sharing and reuse of software generally. > + > + NO WARRANTY > + > + 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY > +FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN > +OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES > +PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED > +OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF > +MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS > +TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE > +PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, > +REPAIR OR CORRECTION. > + > + 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING > +WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR > +REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, > +INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING > +OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED > +TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY > +YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER > +PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE > +POSSIBILITY OF SUCH DAMAGES. > + > + END OF TERMS AND CONDITIONS > + > + How to Apply These Terms to Your New Programs > + > + If you develop a new program, and you want it to be of the greatest > +possible use to the public, the best way to achieve this is to make it > +free software which everyone can redistribute and change under these terms. > + > + To do so, attach the following notices to the program. It is safest > +to attach them to the start of each source file to most effectively > +convey the exclusion of warranty; and each file should have at least > +the "copyright" line and a pointer to where the full notice is found. > + > + <one line to give the program's name and a brief idea of what it does.> > + Copyright (C) <year> <name of author> > + > + This program is free software; you can redistribute it and/or modify > + it under the terms of the GNU General Public License as published by > + the Free Software Foundation; either version 2 of the License, or > + (at your option) any later version. > + > + This program is distributed in the hope that it will be useful, > + but WITHOUT ANY WARRANTY; without even the implied warranty of > + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the > + GNU General Public License for more details. > + > + You should have received a copy of the GNU General Public License > + along with this program; if not, write to the Free Software > + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA > + > + > +Also add information on how to contact you by electronic and paper mail. > + > +If the program is interactive, make it output a short notice like this > +when it starts in an interactive mode: > + > + Gnomovision version 69, Copyright (C) year name of author > + Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. > + This is free software, and you are welcome to redistribute it > + under certain conditions; type `show c' for details. > + > +The hypothetical commands `show w' and `show c' should show the appropriate > +parts of the General Public License. Of course, the commands you use may > +be called something other than `show w' and `show c'; they could even be > +mouse-clicks or menu items--whatever suits your program. > + > +You should also get your employer (if you work as a programmer) or your > +school, if any, to sign a "copyright disclaimer" for the program, if > +necessary. Here is a sample; alter the names: > + > + Yoyodyne, Inc., hereby disclaims all copyright interest in the program > + `Gnomovision' (which makes passes at compilers) written by James Hacker. > + > + <signature of Ty Coon>, 1 April 1989 > + Ty Coon, President of Vice > + > +This General Public License does not permit incorporating your program into > +proprietary programs. If your program is a subroutine library, you may > +consider it more useful to permit linking proprietary applications with the > +library. If this is what you want to do, use the GNU Library General > +Public License instead of this License. > diff -uprN ltp_orig/utils/benchmark/kernbench-0.42/kernbench ltp_patched/utils/benchmark/kernbench-0.42/kernbench > --- ltp_orig/utils/benchmark/kernbench-0.42/kernbench 1970-01-01 05:30:00.000000000 +0530 > +++ ltp_patched/utils/benchmark/kernbench-0.42/kernbench 2009-06-30 15:05:39.000000000 +0530 > @@ -0,0 +1,233 @@ > +#!/bin/sh > +# kernbench by Con Kolivas <ker...@ko...> > +# based on a benchmark by Martin J. Bligh > +trap 'echo "ABORTING";exit' 1 2 15 > + > +VERSION=0.42 > + > +num_runs=5 > +single_runs=0 > +half_runs=1 > +opti_runs=1 > +max_runs=1 > +fast_run=0 > + > +while getopts vsHOMn:o:hf i > +do > + case $i in > + h) echo "kernbench v$VERSION by Con Kolivas <ker...@ko...>" > + echo "Usage:" > + echo "kernbench [-n runs] [-o jobs] [-s] [-H] [-O] [-M] [-h] [-v]" > + echo "n : number of times to perform benchmark (default 5)" > + echo "o : number of jobs for optimal run (default 4 * cpu)" > + echo "s : perform single threaded runs (default don't)" > + echo "H : don't perform half load runs (default do)" > + echo "O : don't perform optimal load runs (default do)" > + echo "M : don't perform maximal load runs (default do)" > + echo "f : fast run" > + echo "h : print this help" > + echo "v : print version number" > + exit ;; > + v) echo "kernbench Version $VERSION by Con Kolivas <ker...@ko...>" ; exit ;; > + n) nruns=$OPTARG ;; > + o) optijobs=$OPTARG ;; > + s) single_runs=1 ;; > + H) half_runs=0 ;; > + O) opti_runs=0 ;; > + M) max_runs=0 ;; > + f) fast_run=1 ;; > + esac > +done > + > +if [[ ! -f include/linux/kernel.h ]] ; then > + echo "No kernel source found; exiting" > + exit > +fi > + > +for i in time awk yes date > +do > + iname=`which $i` > + if [[ ! -a $iname ]] ; then > + echo "$i not found in path, please install it; exiting" > + exit > + fi > +done > + > +time=`which time` > + > +if [[ $nruns -gt 0 ]] ; then > + num_runs=$nruns > +elif [[ $fast_run -eq 1 ]]; then > + echo "Dropping to 3 runs for fast run" > + num_runs=3 > +fi > + > +if (($num_runs < 1)) ; then > + echo "Nothing to do; exiting" > + exit > +fi > + > +if (($num_runs > 10)) ; then > + echo "Are you crazy? trimming number of runs to 10" > + num_runs=10 > +fi > + > +if [[ ! -d /proc ]] ; then > + echo "Can't find proc filesystem; exiting" > + exit > +fi > + > +mem=`awk '/MemTotal/ {print $2}' /proc/meminfo` > +if [[ $mem -lt 4000000 && $max_runs -gt 0 ]] ; then > + echo Less than 4Gb ram detected! > + echo Maximal loads will not measure cpu throughput and may cause a swapstorm! > + echo If you did not plan this, -M flag is recommended to bypass maximal load. > +fi > + > +(( single_runs *= $num_runs )) > +(( half_runs *= $num_runs )) > +(( opti_runs *= $num_runs )) > +(( max_runs *= $num_runs )) > + > +cpus=`grep -c ^processor /proc/cpuinfo` > +echo $cpus cpus found > +echo Cleaning source tree... > +make clean > /dev/null 2>&1 > + > +if [[ $fast_run -eq 0 ]] ; then > + echo Caching kernel source in ram... > + for i in `find -type f` > + do > + cat $i > /dev/null > + done > +fi > + > +if [[ ! -f .config ]] ; then > + echo No old config found, using defconfig > + echo Making mrproper > + make mrproper > /dev/null 2>&1 > + echo Making defconfig... > + make defconfig > /dev/null 2>&1 > +else > + echo Making oldconfig... > + yes "" | make oldconfig > /dev/null 2>&1 > +fi > + > +halfjobs=$(( $cpus / 2 )) > +optijobs=${optijobs:=$(( $cpus * 4 ))} > + > +if [[ $halfjobs -lt 2 ]] ; then > + echo "Half load is no greater than single; disabling" > + half_runs=0 > +elif [[ $halfjobs -eq 2 ]] ; then > + echo "Half load is 2 jobs, changing to 3 as a kernel compile won't guarantee 2 jobs" > + halfjobs=3 > +fi > + > +echo Kernel `uname -r` > +echo Performing $num_runs runs of > +if [[ $single_runs -gt 0 ]] ; then > + echo make > +fi > +if [[ $half_runs -gt 0 ]] ; then > + echo make -j $halfjobs > +fi > +if [[ $opti_runs -gt 0 ]] ; then > + echo make -j $optijobs > +fi > +if [[ $max_runs -gt 0 ]] ; then > + echo make -j > +fi > +echo > + > +echo All data logged to kernbench.log > + > +if [[ $fast_run -eq 0 ]] ; then > + echo Warmup run... > + make -j $optijobs > /dev/null 2>&1 > +fi > + > +date >> kernbench.log > +uname -r >> kernbench.log > + > +add_data_point() > +{ > + echo $@ | awk '{printf "%.6f %.6f %d", $1 + $2, $1 * $1 + $3, $4 + 1}' > +} > + > +show_statistics() > +{ > + case $3 in > + 0) > + echo "No data" > + ;; > + 1) > + echo $1 > + ;; > + *) > + avg=`echo $1 $3 | awk '{print $1 / $2}'` > + var=`echo $1 $2 $3 | awk '{print ($2 - ($1 * $1) / $3) / ($3 - 1)}'` > + sdev=`echo $var | awk '{print $1^0.5}'` > + echo "$avg ($sdev)" > + ;; > + esac > +} > + > +do_log() > +{ > + echo "Average $runname Run (std deviation):" > templog > + echo Elapsed Time `show_statistics $temp_elapsed` >> templog > + echo User Time `show_statistics $temp_user` >> templog > + echo System Time `show_statistics $temp_sys` >> templog > + echo Percent CPU `show_statistics $temp_percent` >> templog > + echo Context Switches `show_statistics $temp_ctx` >> templog > + echo Sleeps `show_statistics $temp_sleeps` >> templog > + echo >> templog > + cat templog > + cat templog >> kernbench.log > +} > + > +do_runs() > +{ > + temp_elapsed="a" > + for (( i=1 ; i <= temp_runs ; i++ )) > + do > + echo $runname run number $i... > + make clean > /dev/null 2>&1 > + sync > + if [[ $fast_run -eq 0 ]] ; then > + sleep 5 > + fi > + $time -f "%e %U %S %P %c %w" -o timelog make -j $tempjobs > /dev/null 2>&1 > + read elapsed_time user_time sys_time percent ctx sleeps <timelog > + temp_elapsed=`add_data_point $elapsed_time $temp_elapsed` > + temp_user=`add_data_point $user_time $temp_user` > + temp_sys=`add_data_point $sys_time $temp_sys` > + temp_percent=`add_data_point $percent $temp_percent` > + temp_ctx=`add_data_point $ctx $temp_ctx` > + temp_sleeps=`add_data_point $sleeps $temp_sleeps` > + done > + if [[ $temp_runs -ne 0 ]] ; then > + do_log > + fi > +} > + > +temp_runs=$single_runs > +tempjobs=1 > +runname="Single threaded" > +do_runs > + > +temp_runs=$half_runs > +tempjobs=$halfjobs > +runname="Half load -j $halfjobs" > +do_runs > + > +temp_runs=$opti_runs > +tempjobs=$optijobs > +runname="Optimal load -j $optijobs" > +do_runs > + > +temp_runs=$max_runs > +tempjobs="" > +runname="Maximal load -j" > +do_runs > diff -uprN ltp_orig/utils/benchmark/kernbench-0.42/Makefile ltp_patched/utils/benchmark/kernbench-0.42/Makefile > --- ltp_orig/utils/benchmark/kernbench-0.42/Makefile 1970-01-01 05:30:00.000000000 +0530 > +++ ltp_patched/utils/benchmark/kernbench-0.42/Makefile 2009-06-30 15:05:39.000000000 +0530 > @@ -0,0 +1,8 @@ > +all: > + > +install: > + chmod ugo+x kernbench > + > +configure: > + > +clean: > diff -uprN ltp_orig/utils/benchmark/kernbench-0.42/README ltp_patched/utils/benchmark/kernbench-0.42/README > --- ltp_orig/utils/benchmark/kernbench-0.42/README 1970-01-01 05:30:00.000000000 +0530 > +++ ltp_patched/utils/benchmark/kernbench-0.42/README 2009-06-30 15:05:39.000000000 +0530 > @@ -0,0 +1,81 @@ > +Kernbench v0.42 > + > + > +What is this? > + > +This is a cpu throughput benchmark originally devised and used by Martin J. > +Bligh. It is designed to compare kernels on the same machine, or to compare > +hardware. To compare hardware you need to be running the same architecture > +machines (eg i386), the same userspace binaries and run kernbench on the same > +kernel source tree. > + > +It runs a kernel at various numbers of concurrent jobs: 1/2 number of cpus, > +optimal (default is 4xnumber of cpus) and maximal job count. Optionally it can > +also run single threaded. It then prints out a number of useful statistics > +for the average of each group of runs and logs them to kernbench.log > + > +You need more than 2Gb of ram for this to be a true throughput benchmark or > +else you will get swapstorms. > + > +Ideally it should be run in single user mode on a non-journalled filesystem. > +To compare results it should always be run in the same kernel tree. > + > + > +How do I use it? > + > +You need a kernel tree (any 2.6 will do) and the applications 'time', 'awk', > +'date' and 'yes' installed. 'time' is different to the builtin time used by > +BASH and has more information desired for this benchmark. > + > +Simply cd into the kernel tree directory and type > + > +/path/to/kernbench > + > + > +Options > + > +kernbench [-n runs] [-o jobs] [-s] [-H] [-O] [-M] [-h] [-v] > +n : number of times to perform benchmark (default 5) > +o : number of jobs for optimal run (default 4 * cpu) > +s : perform single threaded runs (default don't) > +H : don't perform half load runs (default do) > +O : don't perform optimal load runs (default do) > +M : don't perform maximal load runs (default do) > +f : fast run > +h : print this help > +v : print version number > + > + > +Changelog: > +v0.42 Fixed incorrect counting of cpus (thanks Flynn Marquardt) > + Changed -j to at least 4GB ram. > + > +v0.41 Fixed make oldconfig > + > +v0.40 Made all runs use the oldconfig if it exists. Changed to only do one > + warmup run before all the benchmarks. Added logging to kernbench.log > + Cleaned up the code substantially to reuse code where possible. > + Added standard deviation statistics courtesy of Peter Williams > + > +v0.30 Added fast run option which bypasses caching, warmup and tree > + preparation and drops number of runs to 3. Modified half loads to > + detect -j2 and change to -j3. Added syncs. Improved warnings and > + messages. > + > +v0.20 Change to average of runs, add options to choose which runs to perform > + remove single threaded run from defaults, do warmup run, lots more > + sanity checks, drop meaningless runs, add a few warnings, remove fudge > + factor from no. of jobs. > + > +v0.11 First public release > + > + > +Thanks: M. Bligh for ideas. Others for help with magic incantations to get > + BASH to work. > + > + > +Con Kolivas <ker...@ko...> > +Mon Jun 18 18:59:24 2007 > + > +License: > +GPL of course. Read COPYING included in this tarball. > > ------------------------------------------------------------------------------ > _______________________________________________ > Ltp-list mailing list > Ltp...@li... > https://lists.sourceforge.net/lists/listinfo/ltp-list |